Page 1
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Linear IC
Multifunction, Multi-Power Supply IC
for Car Radios
Ordering number:ENN4185
LA5685N
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, T aito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA5685N is a multifunction, multipower supply IC
developed for car radios. It has 8.5V AM output, 8.5V FM
output, 8.5V common output, 5.2V microcomputer output,
and 5.1V bias output, making it the ideal power supply for
LA1833 and LA1887 ICs for FM/AM tuner systems.
Features
• A total of f ive built-in outputs : V1=8.5V (AM), V2=8.5V
(FM), V3=8.5V (common), V4=5.2V (microcomputer),
and V5=5.1V.
• R ON/OFF, FM/AM switching functions.
• Minimal static current for backup (120µA typ).
• Built-in overvoltage protection circuit (V1, V2, and V3 go
off at 28V (typ.), V4 and V5 go off at 56V (typ)).
• Built-in thermal shutdouwn circuit (output goes off at
Tj=170°C (typ.)).
• Built-in short protection circuit.
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatovtupnI
tnerructuptuO
noitapissidrewopelbawollAxamdP 54.2W
erutarepmetgnitarepOrpoT 58+ot53–
erutarepmetegarotSgtsT 521+ot04–
V
V
1xam
CC
2xam 52V
CC
xam1I 08Am
xam2I 001Am
xam3I 002Am
xam4I 05Am
xam5I 5Am
Package Dimensions
unit:mm
3046B-SIP10F
[LA5685N]
25.5
24.0
3.6
14.0
16.7max
8.4
3.5
1.6min
1.32
)notuptuonehw
2.54
0.5
esluptupni(tupnieslupsm002htdiweslupytud%4
3.6
101
1.3
0.45
1.6
SANYO : SIP10F
57V
˚C
˚C
Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusrewoPV
egatlovU/BU/BdetalugertonV5.8otV6 61ot6V
podetalugertonV5.01otV9 61ot9V
CC
40500TN (KT)/8282TS No.4185–1/4
Page 2
LA5685N
Operating Characteristics at Ta = 25˚C, unless otherwise noted, VCC=12V, R-ON=FM/AM=5V
External 33µF OS capacitor connected to V1, V2, V3, and V4
retemaraPlobmySsnoitidnoC
tnerruccitatS
egatlovtuptuO
noitalugereniL
tnerruccitatsU/BU/BIV,V61=U/B
egatlovHTffo-no5V5V
egatlovnoNO-RNONO-R5.2V
egatlovffoNO-RFFO-NO-R 3.0–0.1+V
egatlovnoMA/MFNOMA/MF 5.2V
egatlovffoMA/MF
NO-RtnerructupnINO-RIV5=NO-R 2.0Am
MA/MFtnerructupnIMA/MFIV5=MA/MF 2.0Am
noitalugerdaoL
noitalugerelppiR
Note : * indicates design guaranteed value.
ICC1V0=MA/MF=NO-R5.40.7Am
ICC2V5=MA/MF=NO-R5.40.7Am
1VAm02=1I,V0=MA/MF8.75.82.9V
2VAm05=2I,V5=MA/MF8.75.82.9V
3VAm001=3I8.75.80.9V
4VAm02=4I9.42.55.5V
5VAm1=5I5.0–4V4VV
∆ enil1V
∆ enil2V
∆ enil3V
∆ enil4V
∆ enil5V
HT
FFOMA/MF
∆ daoL1V
∆ daoL2V
∆ daoL3V
∆ daoL4V
∆ daoL5V
1rRAm02=1I,zH021=f,V0=MA/MF*04Bd
2rRAm05=2I,zH021=f,V5=MA/MF*04Bd
3rRAm001=3I,zH021=f*04Bd
4rRAm02=4I,zH021=f*04Bd
5rRAm1=5I,zH021=f*04Bd
V21=U/B 678V
V<V11,V0=MA/MF
CC
V<V11,V5=MA/MF
CC
V<V11,Am001=3I
V51<05Vm
CC
V<V11,Am02=4I
V51<05Vm
CC
V<V11,Am1=5I
V51<05Vm
CC
V0=3.0Am
CC
Am56<1I<Am1,V0=MA/MF 05Vm
Am09<2I<Am1,V5=MA/MF 05Vm
Am061<3I<Am1 001Vm
Am04<4I<Am1 05Vm
Am2<5I<Am1.0 002Vm
Am02=1I,V51<05Vm
Am05=1I,V51<05Vm
nimpytxam
3.0–0.1+V
sgnitaR
tinU
V
CC
V
CC
Pin Assignment
Top view
No.4185–2/4
Page 3
Block Diagram
Test Circuit
LA5685N
niPemaNniPemaN
1VCC6DNG
2U/B72V
34V81V
45V9 NO-R
53V01MA/MF
Sample Application Circuit
No.4185–3/4
Page 4
LA5685N
Input/Output Table
stupnIstuptuO
A
CC
LL* *LLLLL
LH* *LLLHL
H*HLHLHHH
H*HHLHHHH
H*L*LLLHH
• Negative voltages are not to be applied to these pins.
• Always use input/output capacitors (instead of for V5).
(We recommended OS capacitors with good characteristics at low temperature.)
• Built-in overvoltage protection circuit (V1, V2, and V3 go off at 28V (typ.), V4 and V5 go off at 56V (typ.))
• Built-in thermal shutdown circuit (output goes off at Tj=170°C (typ.))
• Built-in short protection circuit.
U/BNO-RMA/MF1V2V3V4V5V
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of April, 2000. Specifications and information herein are subject to
change without notice.
PS No.4185–4/4
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